Sony KV-20S90 Service Manual ▷ View online
— 26 —
KV-20S90/21SE43C
DEMOD
YS1 SW
<RGB SEL>
CVCO
APC
<HUE>
FSC
<FSC SW>
45
APC FIL
47
XT
AL
46
FSCOUT
44
VCC2
40
GND2
8
Y
CLAMP
1
APED
ACC DET.
CHROMA
AMP
COLOR KILLER
<<KILLER ID OFF>>
ACC AMP
BPF
<C BPF>
FILTER ALIGNMENT
CAL. BY FSC
CHROMA
43
TV/C2 INCHROMA SW
C1 IN
2
CVBS2/Y2 IN 41
Y SW
CVBS1/Y1 IN
4
COMB-C IN
7
MONITOR SW
COMB-Y IN
9
VIDEO SW
MON OUT
6
<VIDEO SEL>
<S SEL>
ATT
Y
V SYNC SEP
<VSS>
<VSS>
H SYNC SEP
<HSS>
<H MASK>
<HSS>
<H MASK>
TRAP+EQ
<TRAP OFF>
<TRAP OFF>
AFC
<AFC GAIN>
<FH HIGH>
<<HLOCK>>
<<HCENT>>
<AFC GAIN>
<FH HIGH>
<<HLOCK>>
<<HCENT>>
20
AFCFIL
HSAW GEN.
<HOSC>
(ZAP)
<HOSC>
(ZAP)
HTIM GEN.
<H BLK>
<LEFT HBLK>
<RIGHT HBLK>
<H BLK>
<LEFT HBLK>
<RIGHT HBLK>
17
SCP
COUNTDOWN
<CD MODE>
<INTERLACE>
<CD MODE>
<INTERLACE>
LINE COUNTER
V TIM GEN.
<V UNDER SCAN>
V TIM GEN.
<V UNDER SCAN>
VSAW GEN
VTIM
VTIM
SHARPNESS DL
SHARPNESS AMP
<SHARPNESS>
<SHP FO>
<PRE/OVER>
SHARPNESS AMP
<SHARPNESS>
<SHP FO>
<PRE/OVER>
CLAMP
DC TRAN
<DC TRAN>
DC TRAN
<DC TRAN>
DPIC
<DPIC>
<AGING>
<DPIC>
<AGING>
5
V TIM
18
HP/PR
O
T
E
C
19
HD
PHASE DET.
<H POSTION>
<AFC BOW>
<AFC ANGLES>
HPROT
<<HNG>>
<H POSTION>
<AFC BOW>
<AFC ANGLES>
HPROT
<<HNG>>
HD GEN.
<HD W>
IREF REG
10
GND1
12
1 REF
16
REG
33
VCC
1
WIDE SAW FUNC.
<ASPECT>
<SCROLL>
<UPPER VLIN>
<LOWER VLIN>
<V ZOOM>
<V UNDER SCAN>
<SCROLL>
<UPPER VLIN>
<LOWER VLIN>
<V ZOOM>
<V UNDER SCAN>
VD SAW FUNC.
<VON>
<V SIZE>
<V POSITION>
<VON>
<V SIZE>
<V POSITION>
<S CORRECTION>
<V LINEARITY>
<EHT COMP>
<V LINEARITY>
<EHT COMP>
EW PARABOLA FUNC.
<H SIZE>
<PIN AMP>
<CORNERPIN>
<H SIZE>
<PIN AMP>
<CORNERPIN>
<TRAPEZIUM>
<EW DC>
<EW DC>
VPROT
<<VGN>>
VM AMP
(OFF YS/YM)
<<VGN>>
VM AMP
(OFF YS/YM)
DAC
SW
SW
11
EW
13
VD+
14
VD-
34 SCL
35 SDA
22 R OUT
23 G OUT
24 B OUT
21 IK IN
3
ABL IN
42
ABL FI
15
VM OUT/
V PR
O
T
39
EB-Y IN
38
ER-Y IN
37
EY IN
36
YUV SW
28
R1 IN
27
G1 IN
26
B1 IN
YS1
32
R2 IN (Y
OUT)
31
G2 IN (R-Y
OU
T
30
B2 IN (B-Y
OU
T
29
YS2/YM
EYUV CLAMP
YUV SW
<YSEL>
YUVOUT
<YUVOUT>
YUV SW
<YSEL>
YUVOUT
<YUVOUT>
COLOR AMP
<COLOR>
<C OFF>
AXIS
<AXIS NTSC>
<AXIS PAL>
<COLOR>
<C OFF>
AXIS
<AXIS NTSC>
<AXIS PAL>
Y/C MIX
RGB CLAMP
RGB CLAMP
CLAMP
RGB 1/2
RGB 1/2
ABL/PEAK LIM
<ABL MODE>
<ABL VTH>
<ABL MODE>
<ABL VTH>
AKB
<<IKR>>
<<IKR>>
YM SW
YS2 SW
D
YNAMIC COLOR
<D
YNAMIC C>
PICTURE AMP
<PICTURE>
GAMMA AMP
<GAMMA>
CLAMP
BRIGHT CONT
<BRIGHT>
DRIVE AMP
<R/G/B DRIVE>
CUTT
OFF CONT
.
<R/G/B CUT
OFF>
R/G/B BLK
<PON>
<R/G/B ON>
I
2
C BUS
DECODER
STATUS I/F
STATUS I/F
25
IC301: CXA2133BS
KV-20S90 / 21SE43C
— 27 —
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2 |
3
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4
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5
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6
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7
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8
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9
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10
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11
|
12
A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
I
[TUNING CONTROL, Y/C/J, POWER SUPPLY, DEFLECTION, TUNER/IF, AUDIO, MTS]
A
A BOARD LOCATOR LIST
D001
G-10
IC001
H-9
D002
G-11
IC002
H-11
D003
H-8
IC003
I-10
D004
H-8
IC004
F-12
D038
H-10
IC200
F-3
D201
G-3
IC201
G-4
D203
I-11
IC301
G-7
D204
I-11
IC401
F-6
D205
F-3
IC521
F-4
D208
E-9
IC541
D-4
D209
H-11
IC601
B-8
D210
H-2
IC602
D-7
D215
E-6
D301
F-3
Q001
F-10
D302
G-8
Q002
G-9
D310
G-8
Q003
G-9
D311
G-8
Q202
E-7
D320
F-8
Q003
G-9
D403
E-10
Q202
E-7
D434
E-30
Q203
E-9
D501
B-4
Q205
H-6
D502
C-3
Q252
G-9
D541
E-4
Q300
F-8
D552
C-3
Q301
G-8
D561
C-2
Q302
G-7
D562
C-2
Q303
F-3
D571
D-3
Q305
F-9
D572
E-30
Q390
I-6
D573
E-30
Q391
G-7
D574
E-4
Q392
G-8
D581
E-30
Q393
G-8
D601
D-8
Q394
G-8
D602
E-9
Q501
D-5
D603
B-9
Q502
B-5
D609
A-8
Q556
F-8
D611
D-6
Q571
D-3
D613
C-8
Q601
E-8
D614
C-8
Q602
F-9
D615
B-9
Q605
D-7
D616
B-6
Q606
F-8
D617
B-7
Q607
B-11
D631
B-10
Q608
A-10
D632
B-10
Q650
G-6
D633
B-11
Q670
E-9
D634
A-12
D635
A-11
X001
G-10
D636
C-11
X301
H-7
D637
B-12
D638
B-12
D650
G-6
D653
A-9
D670
E-9
CRYSTALS
TRANSISTOR
IC
DIODE
S007
CN501
Q200
Q201
C212
C209
C207
C573
IC200
IC201
C301
C320
C300
R302
R300
C321
R301
R038
C310
Q301
Q300
IC521
J200
J203
C205
C691
R007
R080
C319
C376
C312
D207
C225
D502
R311
R503
D541
D205
R200
C211
C232
D572
R545
R543
R552
C562
C564
R504
C004
R030
R056
C221
S002
S001
CN401
S003
S004
S005
S006
CN402
C017
C046
C092
R287
Q602
IC541
IC003
CN203
IC401
Q502
R542
T504
R018
R043
R013
R081
R070
R071
CN502
R403
R404
C412
C416
C400
R549
R009
C358
C399
R091
C228
Q354
Q357
R099
C223
Q204
R290
Q203
C652
D300
R576
Q359
Q358
IC302
R361
R377
Q350
C213
Q351
D581
R553
D520
IC001
IC402
C574
D203
D204
D206
D210
C325
C629
C542
C390
D208
D574
L50
3
X301
R578
R544
R040
R690
R237
R238
Q302
Q205
Q206
Q207
C511
Q202
IC400
C260
C360
C577
C217
C215
R388
C234
C214
R234
R247
R378
R376
R639
R533
R534
R532
R535
R240
R382
C216
R364
C311
FB350
Q352
J201
J202
R400
C313
R310
R318
R356
R322
R004
R089
C023
R087
C024
R088
C025 R008
R095
R316
C318
R028
R372
R368
C348
R397
R367
C373
C305
C309
R054
R048
R046
R065
R045
R047
R044
R011
C255
R251
R252
R101
R151
R150
R058
R057
R218
R219
R222
R283
R280
R216
R585
R583
R260
C575
R384
R383
R085
R017
R051
R241
R241
R003
R246
C361
C359
C357 R380 R353
R303
R366
R387
R352
C355
R249
R248
R250
R269
R235
R379
R586
D633
D637
R611
D635
R616
R621
D636
T604
R644
D614
R645
CN602
R631
R671
VDR601
RY602
RY601
Q607
Q608
Q601
R682
Q605
IC601
R655
R663
C374
FB602
D611
D634
C656
R657
R624
PH600
D215
C218
L200
D617
T603
L504
D551
R551
L591
R571
C591
R505
T501
C504
C508
C634
R591
C571
R572
R574
R347
D302
D310
Q571
C645
Q501
JR100
R683
R609
C580
R341
C340
L001
L150
L301
L302
L351
D653
C601
R688
R620
C638
C648
R610
C647
C654
D670
C611
R669
FB611
FB604
D603
R674
D610
R654
R634
C604
C603
C602
C605
C664
C666
D665
D666
R665
IC002
R632
Q303
Q340
C237
CN204
CN205
C646
R433
D280
R291
R288
R568
C556
CN550
R325
R662
C613
D609
C520
C641
C617
R295
R640
Q556
R559
R329
R 5 6 7
R565
R 3 4 2
R 3 4 4
Q606
R664
R698
R005
R258
R293
C005
R075
R294
R055
R027
R026
R026
R025
Q390
R390
Q380
C350
R340
C299
R289
C236
R635
CN301
C630
R636
R588
R076
R078
C007
R092
R292
Q002
Q305
Q252
Q003
Q001
Q394
C599
JR003
R589
R590
R385
Q393
R077
D620
Q666
R 3 9 1
C616
R 0 7 3
TU101
R060
R0
61
H D Y +
H D Y +
H D Y -
H D Y -
V D Y -
V D Y +
1
2
3
4
5
6
7
8
9
1 0
1 1
1
2
6
7
1
6
1
1
9
1
1
1
11
12
22
B
E
C
1
6
IC301
TP103
+30V
TP101
+9V
AFT
OUT
OUT
TP102
DET OUT
TP602
+5V
R OUT
L OUT
TP400
AUDIO VCC
TP500
H.DRIVE
SET+9V
TP601
TP508
V OUT
V OUT
TP507
V MID
V MID
ABL
+13V
HEATER
-13V
200V
TP600
B+
TP505
900V
TP504
180V
TP506
H OUT
H OUT
TP502
+13V
TP501
-13V
STBY+5V
TP001
TP403
L OUT
L OUT
R OUT
TP404
VP
HP
SCL
52
50
45
35
30
26
15
1
COLD
48
45
40
25
15
10
5
1
20
9
1
12
2
1
3
ROUT
3
4
6
1
1
6
8
S
G
11
TP605
SET +7.5V
E
B
E
B
B
E
B
E
E
B
E
B
1
5
B
E
B
E
1
3
1
3
7
12
16
17 18
27
1-673-985-51
— 28 —
KV-20S90 / 21SE43C
1
|
2 |
3
|
4
|
5
|
6
|
A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
C BOARD SCHEMATIC DIAGRAM
H
KG
G2
CV
KR G1 G4 HV
KB
1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
1
2
3
4
5
4
5
6
7
8
9
10
11
12
1
I.C
KG
KR
H
KB
GND
G1
G2
H
F GND
1
C1752
C1751
L1751
C1755
R1761
R1760
J1751
D1758
R1770
R1759
R1757
R1756
R1758
D1756
D1754
D1755
CN1754
CN1753
CN1751
CN1752
R1763
R1764
R1765
IC1751
10
250V
0.0047
2kV
E
2.2
160V
1.8
3W
:RS
100k
1/2W
RGP10GPKG23
560k
1/2W
100
1/2W
1k
1/2W
1k
1/2W
1k
1/2W
1SS83TD
1SS83TD
1SS83TD
:PIN-J
1P
6P
:S-MICRO
5P
:S-MICRO
100
100
100
TDA6108JF/N1B
CRT DRIVER
TP47R
TP47B
R OUT
B OUT
TO A BOARD
TO A BOARD
TAB(CONTACT)
E
R
G
G
B
IK
H
G2
CRT
B
I
N
G
I
N
R
I
N
G
N
D
I
K
R
O
U
T
G
O
U
T
B
O
U
T
+B
27V: TIGER
CN502
CN301
E
E
N.C.
N.C.
V
D
D
200V
CRT DRIVE
)
(
BA4D-905-C
RBG DRIVER
1
2
3
B
G
R
R
G
B
200V
200V
+B
+B
TO A BOARD T504 FV
TO A BOARD T504 G2
— 29 —
KV-20S90 / 21SE43C
1
|
2 |
3
|
4
|
5
|
A
—
B
—
C
—
[RGB DRIVE, CRT DRIVE]
C
CN1751
CN1754
J1751
L1751
C1752
R1764
R1765
R1759
C1755
CN1753
G1
G2
KR
KG
KB
H1
H2
GROUND
G2
SPARK
GAP
GROUND
B
E
E
G
R
IK
TP47B
B OUT
B OUT
TP47R
R OUT
R OUT
20,27
1-673-986-11
171691511
C BOARD IC VOLTAGE LIST
IC1751
PIN
VOLT
1
2.1
2
2.2
3
2.1
4
GND
5
3.7
6
193.4
7
146.5
8
133.8
9
134.9
1
148.4V p-p (H)
2
118.8V p-p (H)
3
122.5V p-p (H)
C BOARD WAVEFORMS
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